package cn.base.day08;

import java.util.ArrayList;

public class Test17 {
    public static void main(String[] args) {
        ArrayList<String> a1 = new ArrayList<>();
        a1.add("aaa");
        for (int i = 0; i < a1.size(); i++) {
            String s = a1.get(i);
            if (a1.get(i).contains("牛奶"));
        }
    }
}
